KokoRO is the most like official-like server I've played on since iRO Chaos (official server that I played from 2003-2015). The best thing about the server is every single mechanic is EXACTLY like it was on the official servers. The small amount of maps that IW is disabled actually make the end game content played the way it was meant to be played, not trivialized with IceWall. If you are looking for a server that feels just like 2006-07 RO before the Kafra shop was implemented, this is it.